Irreligious

[Donald Trump]

Destitute of religion; not controlled by religious
motives or principles; ungodly. Cf. Impious.

[Justin Bieber]

Not to be confused with non-religious or anti religious. Irreligious means that there is good and bad in every religion so quit judging between them.

[Vania]

Indifferent or hostile to religion, or having no religious beliefs.

[Sommer]

having no interest in religion, or generally opposed to religion